C
CDetects AI-generated text and images and checks for plagiarism
Free, from $13.99/mo
GPTZero vs Originality.ai
Pricing, features, platforms and who each one suits — side by side.
G
Choose GPTZero if…
- you're in its core audience: teachers and educators, students
O
Choose Originality.ai if…
- you're in its core audience: content publishers, marketing agencies
Side by side
Feature GPTZero Originality.ai
Pricing modelFreemiumFreemium
Starting price—$12.95/mo
Free plan
Free trial
API
Open source
Cost per 1,000 words processed—$0.065
Trains AI on your content—Yes, unless you opt out
Data retention—Scan history kept 30 days (Pro) or 365 days (Enterprise)
Security and complianceSOC 2 Type II, CCPA, GDPR—
Sentence-level highlights—
Plagiarism checker
Writing replay
Bulk processing—
Shareable reports—
Docs/LMS integration
PlatformsWeb, Chrome, APIWeb, Chrome, API
CategoryAI Detection & HumanizersAI Detection & Humanizers
CompanyGPTZero LLCOriginality AI Inc.
Based inUnited StatesCanada
Founded20232022
Part of——
Key features
G GPTZero
- Detects text from ChatGPT, Claude and Gemini
- Highlights passages likely to be AI-generated
- Writing Replay shows how a document was typed
- Plagiarism checker for unattributed content
- Hallucination detector
- Grammar check and writing feedback
- Google Docs, Google Classroom, Canvas and Zapier integrations
- API with code samples in 17 languages
O Originality.ai
- AI text detection with sentence-level highlights
- Plagiarism checker
- Fact and AI hallucination checker
- Grammar and readability checkers
- Bulk Scan for many documents
- Writing Replay showing how a document was written
- Deep Scan editing suggestions
- Shareable reports and PDF downloads
Plans and prices
From each vendor's site. Prices change — confirm before buying.
GPTZero
FreeFree
Professional TeamPrice not shown on page
Originality.ai
FreeFree
Pro$14.95/mo, or $12.95/mo billed yearly ($155.40/yr)
Enterprise$179/mo, or $136.58/mo billed yearly ($1,638.96/yr)
Strengths and limitations
GPTZero
- Free tier available to get started
- Integrates with Google Docs, Google Classroom, Canvas and Zapier
- Fully supports five languages
- States SOC 2 Type II, FERPA, GDPR and CCPA compliance
- Individual plan prices could not be read from the pricing page
- Team plan requires at least 2 seats and payment by card only
- No native mobile apps mentioned
Originality.ai
- Free tier includes AI, plagiarism, grammar and fact checks
- Pro plan starts at $12.95/mo billed yearly
- Integrations for Chrome, Firefox, Google Docs, Moodle and Google Classroom
- Detects text that was paraphrased with AI
- API access only on the $179/mo Enterprise plan
- Credit-based usage: 1 credit equals 100 words
- Pricing page gives conflicting details on free credits and Pro scan history
More comparisons
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Built from each vendor's public website; we haven't tested them hands-on. Editorial policy